Austinmorris96

So I traded for a 620 pickup a couple days back and it needed a new batterie so I replaced it but did an old school taking the negative terminal off test to see if the car would run with it off to see if the alternator was good or bad well it died so I tested the alternator and it tested positive so I started looking at the wiring and it's pretty jankity, I saw that there was no ground going from the block to the frame so I'm wondering if that would have anything to do with alternator problems. Thanks